CADE EXAM 5: EAR QUESTIONS AND ANSWERS
The ear is the organ of hearing and balance and has 3 parts:
external, middle and internal
The external ear is composed of the
pinna and external auditory meatus.
Sensation to these areas is broad and overlaps arising from the ________________
and ______________________ nerves from the cervical plexus as well several
branches from cranial nerves including :
great auricular and lesser occipital nerves
-auriculotemporal branch of the trigeminal : (tympanic membrane on external surface)
-auricular branch of the vagus.
-the facial nerve
the external ear is formed by multiple pharyngeal arches, this is why there are
many sources for innervation
structures of the external ear
, helix
antihelix
concha
tragus (pointy: medial)
antitragus
lobule
the external auditory meatus extends from the __________ to the
___________________
concha to the tympanic membrane
also called swimmer's ear, is inflammation of the ear canal. It often presents with ear
pain, swelling of the ear canal, and occasionally decreased hearing. Typically there is
pain with movement of the outer ear. A high fever is typically not present except in
severe cases.
otitis externa (Swimmer's ear)
the _________________________ separates the external from the middle ear.
Sound waves are funneled by the external ear into the _______________________;
these waves strike the tympanic membrane and cause it to shake.
tympanic membrane.
external auditory meatus
The ear is the organ of hearing and balance and has 3 parts:
external, middle and internal
The external ear is composed of the
pinna and external auditory meatus.
Sensation to these areas is broad and overlaps arising from the ________________
and ______________________ nerves from the cervical plexus as well several
branches from cranial nerves including :
great auricular and lesser occipital nerves
-auriculotemporal branch of the trigeminal : (tympanic membrane on external surface)
-auricular branch of the vagus.
-the facial nerve
the external ear is formed by multiple pharyngeal arches, this is why there are
many sources for innervation
structures of the external ear
, helix
antihelix
concha
tragus (pointy: medial)
antitragus
lobule
the external auditory meatus extends from the __________ to the
___________________
concha to the tympanic membrane
also called swimmer's ear, is inflammation of the ear canal. It often presents with ear
pain, swelling of the ear canal, and occasionally decreased hearing. Typically there is
pain with movement of the outer ear. A high fever is typically not present except in
severe cases.
otitis externa (Swimmer's ear)
the _________________________ separates the external from the middle ear.
Sound waves are funneled by the external ear into the _______________________;
these waves strike the tympanic membrane and cause it to shake.
tympanic membrane.
external auditory meatus
